56457319 has 2 divisors, whose sum is σ = 56457320. Its totient is φ = 56457318.

The previous prime is 56457311. The next prime is 56457361. The reversal of 56457319 is 91375465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56457319 - 2³ = 56457311 is a prime.

It is a super-2 number, since 2×56457319² = 6374857737335522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56457311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28228659 + 28228660.

It is an arithmetic number, because the mean of its divisors is an integer number (28228660).

Almost surely, 2^56457319 is an apocalyptic number.

56457319 is a deficient number, since it is larger than the sum of its proper divisors (1).

56457319 is an equidigital number, since it uses as much as digits as its factorization.

56457319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 40.

The square root of 56457319 is about 7513.8085549207. The cubic root of 56457319 is about 383.6248664854.

The spelling of 56457319 in words is "fifty-six million, four hundred fifty-seven thousand, three hundred nineteen".